This is a video of the kooks complete exhaust on my 2011 SS L99. It includes 1 7/8 headers, high flow cats, x pipe into dual 3" and mufflers. Please excuse the video quality being its the first one ive made. I just wanted to get a video out there of this exhaust for people deciding on what system to go with. The car isnt too loud at idle but sounds great when you get on it. I have noticed no drone at all cruising on the highway. Hopefully this can help those of you trying to decide on an exhaust for your car. Im sure someone will ask and yes the car was tuned after the system was put on.